Family Dollar complaint: Denied ability to purchase items

Stopped by one of my local family Dollar Stores at about 920p on Thursday 14th and picked out aprox 30 or so clearance items and had them in a buggy ready to purchase. The lady working said I could not purchase more than 10 items. She stated that she had not had the opportunity to put up signage. I expressed that I often shop clearance and had never heard of such a policy. She explained “ a woman “like” you cleaned out my last clearance not leaving any items for anyone else”. She explained that people who need the items need a chance to shop too. Then proceeded with a story of a grand mother on a fixed income that was upset about no items being available. By that point I stopped listening. I left my buggy of items and took 10 that I wanted the most. I proceeded over to the winter hats and gloves and got several. I knew they were on sale, they were not marked. I got to the register and the lady took 2 out of my pile and tossed them behind her. Refusing to ring them up. I spent $20 plus tax vs the $130 I would have spent.